was a town located in Yosa District, Kyoto Prefecture, Japan.
As of 2006, the town had an estimated population of 7,913 and a density of 134 persons per km<sup>2</sup>. The total area was 59.05 km<sup>2</sup>.
On March 1, 2006, Kaya, along with the towns of Iwataki and Nodagawa (all from Yosa District), was merged to create the town of Yosano.
Kaya's sister-town was Aberystwyth in Wales.